BSA 22-412X40AOWRTB. Sweet .22 3X-9X, 40mm Adjustable Obj., dovetail rings, trapped blister. The BSA Sweet .22 AO Rifle Scope is specifically designed for the .22LR. Complete with 3 ballistically calibrated turrets for 36-, 38- and 40-grain cartridges, the Sweet .22 AO also features an adjustable objective, fully coated lenses, 30/30 reticle and 2-piece dovetail rings. Matte black finish. Waterproof, shockproof and fogproof.